I just went through my 94 and changed the igniter (Red Hawk from Taiwan, better than Chinese ones) ignition coil (Red Hawk from my local Ez-go dealer, expensive, but guaranteed, especially after buying 4 coils off Amazon 3 were dead right out of the box) voltage regulator, read that a bad voltage regulator putting out anything over 15v will fry a Chinese igniter and coils, solenoid, throttle micro switch and after that i got a very weak spark, but coming from no spark, that was a good thing, i had to set the gap on the sparkplugs really tight, to just get a good spark across the gap, going to look for a aftermarket set of plug wires, the non OEM coils have cheap wires and the insulation is so bad, that i was getting a spark jumping across the wire to the engine head, cleaning all ground wires and the plate that the ignition components sit on is crucial, read on here, that a guy took a battery wire and connected it to negative on battery and ran it over to the mounting bolts for the plate and that helped to brighten spark. Well after 2 months of waiting for parts, 1 trip to a shop, that had a guy claiming 30 years in the business, but had not one clue how to diagnose electrical problems, he must of meant 30 minutes, anyway, i finally got it running last night, spark is still weak, but from my 40 years wrenching on motorcycles, i know that spark will increase under a compression load, similar to a glow plug on a RC nitro motor, (I'm also a huge hobby guy and nitro is my thing) so if you're getting a weak spark, you'll have a better spark inside the combustion chamber, so the engine will run, so ya after spending $1400 for my dream cart and another $400-500 on parts and trick bling, I've got my cart running. My suggestion to those who are having issues with spark to, first check your voltage regulator, before you throw a $100 igniter and $100 ignition coil on and only have it burn out due to a faulty regulator, get a better igniter and coil, you'll save a headache that won't go away, and check every component involved in the production of spark, igniter, coil, pulsar coil and one a lot of people forget, the battery, a dead or low battery will cause no or low spark too, grounds, grounds, grounds, yes they matter, a proper ground is what completes the circuit, without it, your beating a dead horse. I want to thank all those on this site, without your help i would of spent more money and time, resulting in a huge headache, so the information on this site, is priceless for sure. Oh back to the brighter spark under compression thing, check the compression on your motor, should be 130psi -150psi a motor can run on less than 100 but below 60 it'll run like crap and be a candidate for the paperweight brigade, or a boat anchor, these motors are notorious for having the valves tighten up and that would be the number one reason for loss of compression, so check your block first, spark and fuel can only do so much, but the third component to a running motor, is compression. Couple things i learned, no spark or one little spark after releasing the gas peddle, means bad igniter, coil requires 3.2-57 ohms across primary wire tabs and 11-17 ohms on secondary, from sparkplug boot to boot, if it's outside these specs, the coil is no good, next the pulsar coil 19-21 ohms, .1v AC and minimum of 10v from pulsar when motor is turning and to check for a pulse just use a multimeter set on 20v DC check pulsar while motor is turning, should jump from 1v - 3v that shows that it's pulsing and it's good, regulator is an easy test and so is the solenoid, so i hope these diagnostic tools help someone on here, because lost spark is a common problem, but taking one step at a time, you will find the problem and is it's something really weird or odd, please share it with the others on this site, we're the best resource for solutions, so always return and let people know if you solved the problem and let us know what you did. Thank you. Sorry I have Asperger's and pragmatic verbosity is a bitter pill i must endure, so thank you for your patience and understanding.
